What Bohemia Has Officially Confirmed
Bohemia Interactive announced Arma 4 in October 2024 with a brief but significant reveal: the game will run on the Enfusion engine — the same engine currently powering Arma Reforger — and dedicated server support will be available from day one.
Beyond the engine announcement, Bohemia has kept specific details close to the chest. A firm release date has not been published as of mid-2026. Widely cited community estimates point toward 2027, but this has not been officially confirmed. As with any game at this stage of development, timelines can shift.
Here's what we know for certain versus what is expected based on Reforger:
| Detail | Status | Source |
|---|---|---|
| Enfusion engine | Confirmed | Bohemia announcement, Oct 2024 |
| Dedicated server support at launch | Confirmed | Bohemia announcement, Oct 2024 |
| ~2027 release window | Expected | Community estimates, not officially confirmed |
| Workshop-based mod support | Expected | Based on Reforger's existing system |
| Built-in VON (voice over network) | Expected | Enfusion engine feature in Reforger |
| PC + console crossplay | Expected | Based on Reforger's crossplay architecture |
| Specific player count limits | Not yet announced | — |
| Exact server hardware specs | Not yet announced | — |
The Enfusion Engine: What It Means for Server Operators
The jump from Arma 3's Real Virtuality (RV) engine to Enfusion is the most significant technical change the series has seen. For players, that means better visuals and smoother performance. For server operators, it means a fundamentally different — and significantly improved — hosting environment.
Better Netcode
The RV engine, which Arma 3 runs on, was never built with large-scale multiplayer as a primary concern. Server operators and mission designers spent years working around its networking limitations. Enfusion was designed from the ground up with multiplayer performance as a core requirement. Arma Reforger servers running on Enfusion handle player counts and movement synchronization noticeably more smoothly than an equivalent Arma 3 server, even at similar player counts.
Multi-Threading Support
One of the most practical improvements in Enfusion for server operators is proper multi-threading. Arma 3's RV engine was largely single-threaded, meaning that even a server with a powerful multi-core CPU was effectively limited to the performance of a single core. Enfusion distributes workloads across multiple CPU cores, which translates directly to better server performance and more stable frame rates for players — especially in large missions with many units and scripts running simultaneously.
Standardised Server Tools
Reforger uses a dedicated server binary that integrates cleanly with standard game server management tools, including TCAdmin. There is every reason to expect Arma 4 to follow the same pattern. This means server operators familiar with managing Reforger servers will already know most of what they need to manage Arma 4 servers from day one.
Arma Reforger as Your Arma 4 Preview
If you want to understand what running an Arma 4 server will feel like, run an Arma Reforger server. The two games share the same engine, the same server architecture, and — with high confidence — a similar mod ecosystem. Reforger is not just a bridge title; it is a live demonstration of Arma 4's infrastructure.
Key things Reforger has already demonstrated about the Enfusion server model:
- Built-in VON (Voice over Network) — Reforger has direct speech and in-game radio communications built into the engine. There is no dependency on external tools like TeamSpeak or TFAR for in-game voice. This will almost certainly carry over to Arma 4.
- Workshop mod integration — Mods are downloaded and managed through the in-game Workshop rather than requiring manual installation or tools like the Arma 3 Launcher. Server-side mod management is significantly streamlined.
- Crossplay architecture — Reforger supports PC, Xbox, and PlayStation players on the same server. Whether and how Arma 4 implements crossplay is not yet confirmed, but the infrastructure already exists in the engine.
- Consistent RAM and CPU demands — Reforger servers with 10–20 players run comfortably on 8 GB of RAM. Larger servers or mod-heavy configurations benefit from 16 GB. Arma 4 may demand more as the game matures and mod support expands, but Reforger gives a reasonable baseline for planning.
Mod Support and the Workshop
Modding is central to the Arma community in a way that has no real parallel in other games. Arma 3's mod scene — ACE3, TFAR, ACRE2, Altis Life, Exile, Antistasi, and hundreds of others — built an enormous long-tail player base that has kept the game alive for over a decade after launch.
Arma 4 will carry that tradition forward on Enfusion. Based on Reforger's implementation, here's what to expect for server-side mod support:
- Enfusion Workbench — Bohemia's official modding toolkit for the Enfusion engine, already in use for Reforger. Mod creators familiar with Reforger modding will have a significant head start on Arma 4.
- Workshop distribution — Mods are published to and downloaded from the Workshop, removing the need for manual SteamCMD mod management that Arma 3 server admins know all too well.
- Server-enforced mods — Server admins can require specific mod packages, the same way Reforger handles mod enforcement for mission-specific content.
One important distinction for Arma 4: it is not a direct port of Arma 3. Community mods like ACE3 and TFAR are Arma 3-specific and will not transfer to Arma 4. The Enfusion modding community will build its own equivalents over time — some of which will almost certainly exceed what was possible in Arma 3. For server operators, this means a transitional period post-launch where the mod ecosystem builds out, similar to what Reforger experienced in its early months.
Predicted Server Hardware Requirements
Bohemia has not published official Arma 4 dedicated server specifications. What we can do is use Reforger as a baseline and adjust upward for a full title with more content, larger maps, and a more mature mod ecosystem at launch.
Our current estimates for Arma 4 server hardware, based on Reforger performance data:
| Use Case | Estimated RAM | Notes |
|---|---|---|
| Small server (up to 20 players) | 8 GB | Vanilla or light modding |
| Mid-size server (20–60 players) | 16 GB | Standard modded missions |
| Large server (60–128+ players) | 32 GB | Heavy mods, large maps, many concurrent scripts |
CPU clock speed will matter more than core count for most Arma 4 server workloads, continuing a trend from the Arma 3 era. Enfusion's multi-threading improvements help, but high single-core performance remains important for script-heavy missions. NVMe storage for fast server startup and map loading is worth prioritising over raw disk capacity for most operators.
Why Registering for Arma 4 Hosting Now Makes Sense
With Arma 4 still a year or more out, the question we hear most often is: why would I think about hosting now instead of waiting?
There are three solid reasons.
First, early registrants get priority notification and an exclusive discount. We don't know Arma 4 server pricing yet — that gets confirmed closer to launch. But registering now puts you at the front of the queue: you'll hear about availability before the public announcement, and early registrants will receive an exclusive discount when hosting goes live. If you're already an A4H customer on Arma 3 or Reforger, you'll receive an additional loyalty discount on top of that.
Second, there are practical reasons to build your server presence early:
- Community building takes time. The units and communities that launch strong on Arma 4 will be the ones that spent the preceding months recruiting and training on Reforger. Having your server infrastructure in place before launch means your community has a home to grow into.
- Day-one infrastructure is not guaranteed. Most game hosting providers do not confirm server support for unreleased titles. We have made that commitment explicitly — if you are on our platform when Arma 4 launches, your server is ready.
- Free migration from Reforger. If you are currently running a Reforger server with us, migration to Arma 4 is included at no cost when the time comes. No re-setup, no new configuration from scratch.
Third, the Arma community's history with new title launches is clear: players and units who are organised and ready on day one claim the largest communities and the strongest reputations. Infrastructure is not the exciting part, but it is the foundation everything else is built on.
Register now to lock in your exclusive Arma 4 launch discount — no payment required, and you'll be contacted when hosting goes live.